swift storyboard segue

iOS segue

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var sc1: UISegmentedControl!
    
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        self.navigationItem.title = "Nav Controller"
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        
        switch(segue.identifier!) {
        case "detailsView":
            var vc = segue.destinationViewController as? DetailsViewController
            
            vc?.name = "Hello segue"
        default:
            return
            
        }
    }
}